膨润土
沼气
稻草
沼气生产
牛粪
光催化
催化作用
制浆造纸工业
稻草
废物管理
化学
生物燃料
环境科学
食物垃圾
厌氧消化
农学
食品科学
甲烷
生物
化学工程
有机化学
工程类
无机化学
肥料
作者
R. Tamil Selvan,A. Immanuel Selwynraj
标识
DOI:10.1016/j.psep.2024.05.017
摘要
This study investigates the application of a novel composite photocatalyst, g-C3N4/SiO2/ Bentonite, for rice straw pretreatment, aiming to enhance biogas production in anaerobic digestion. The photocatalytic pretreatment disrupts rice straw's lignin and hemicellulose structures, reducing silica content for improved microbial degradation. Five 2 L anaerobic digesters were employed with rice straw as the substrate and co-digestion materials, including cow dung and food waste. Rice straw treated with the g-C3N4/7.5% SiO2/5% Bentonite catalyst exhibited a remarkable 37% increase in methane yield compared to untreated rice straw. This photocatalytic process led to a 31% increase in cellulose content and a 30% reduction in lignin after 6 hours of pretreatment. Simultaneously, silica content in the rice straw decreased to 6.4% after 6 hours, resulting in a 48% increase in the carbon proportion. These findings underscore the potential of integrated photocatalysts for significantly enhancing biogas production efficiency through the pretreatment of lignocellulosic biomass.
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